e-Key <span id="jodit_selection_marker_1707909408813_9814170435284408" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Comb<span id="jodit_selection_marker_1707909408813_6339882066581244" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>retum
SANBI Flora Keys Logo
Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Combretaceae - Combretum Loefl.

Description:

  • Trees, shrubs, shrublets or woody climbers, very rarely subherbaceous; lepidote or with microscopic and sometimes macroscopic stalked glands
  • Leaves opposite, or sometimes in whorls of 3 or 4, or rarely alternate, usually petiolate (rarely subsessile), almost always entire; petiole sometimes persisting (especially in climbers) forming a ± hooked spine
  • Flowers bisexual, regular, or slightly irregular, 4- or 5-merous, in elongated or subcapitate axillary or extra-axillary spikes or racemes or in terminal or terminal and axillary, often leafy panicles
  • Receptacle usually clearly divided into a lower part and an upper part which varies from patelliform to infundibuliform and is itself sometimes visibly differentiated into a lower part containing the disc (when present) and an often more expanded upper part
  • Sepals: lobes 4 or 5 (rarely more), deltate to ± subulate or filiform, sometimes scarcely developed
  • Petals usually 4 or 5 (rarely absent, in aberrant specimens and up to 7 in occasional flowers), small and inconspicuous to showy and exceeding the sepals, of various colours
  • Stamens twice as many as petals, inserted in 1 or more, usually 2, series inside upper receptacle and usually exserted
  • Disc glabrous or hairy, with or without a free margin, sometimes inconspicuous or absent
  • Style free (in southern Africa species); stigma sometimes ± expanded
  • Ovary completely inferior
  • Fruit 4- or 5-winged, ridged or angled, sessile or stipitate, indehiscent or rarely tardily dehiscent; pericarp usually thin and papery, sometimes leathery, more rarely fleshy
  • Seeds: cotyledons various
  • x = 13 (11, 12, 14) (high polyploidy)

Nomenclature:

  • Combretum Loefl.
    • Loefling: 308 (1758) name conserved
    • Sonder: 508 (1862)
    • Exell: 101 (1978)
    • Van Wyk: 125 (1984)
    • Carr & Rogers: 173 (1987)
    • Carr: 13 (1988)
    • Carr & Retief: 38 (1989)
    • Rodman: 45 (1990)
    • Hennessy & Rodman: 149 (1995)
  • Poivrea Thouars
    • Thouars: 28 (1811)
    • Sonder: 512 (1862)

Distribution & Notes:

  • Global: Species 250, fairly cosmopolitan in warm climates, excluding Australia and Pacific Islands
  • Southern Africa: Species ± 30, widespread in all countries and provinces, except in Free State (rare), Lesotho and Western Cape

References:

  • CARR, J.D. 1988. Combretaceae in southern Africa. Tree Society of southern Africa, Johannesburg
  • CARR, J.D. & RETIEF, E. 1989. A new species of Combretum from Natal. Bothalia 19
  • CARR, J.D. & ROGERS, B.C. 1987. Chemosystematic studies of the genus Combretum (Combretaceae), part 1. South African Journal of Botany 53
  • EXELL, A.W. 1978. Combretaceae. Flora zambesiaca 4
  • HENNESSY, E.F. & RODMAN, S. 1995. A note on Combretum subgenus Combretum section Macrostigmatea (Combretaceae). Bothalia 25
  • LOEFLING, P. 1758. Iter Hispanicum. Lars Salvius Kostnad, Stockholm
  • RODMAN, S. 1990. The validity of currently recognised sectional limits within Combretum Loefling, subgenus Combretum (Combretaceae) in southern Africa. M.Sc. thesis, Department of Botany in Faculty of Science at the University of Durban-Westville, Durban
  • SONDER, O.W. 1862. Combretaceae. Flora capensis 2: 508, 512
  • THOUARS, L.M.A.A. DU PETIT 1811. Observations sur les plantes des îles de France. (Mél. Bot. III). A. Bertrand, Paris
  • VAN WYK, A.E. 1984. A new species of Combretum from Venda and taxonomic notes on the section Angustimarginata (Combretaceae). South African Journal of Botany 3